"""
def two_sum():
    list_1 = [1, 2, 8, 3]
    target = 9
    for i in list_1:
        for j in list_1:
            if i + j == target:
                return list_1.index(i), list_1.index(j)


for i in range(4):
    print('\n')
    list_1 = []
    for j in range(5):
        list_1.append('hello world')
    print(list_1)

for i in range(0, 4):
    for x in range(0, 6):
        if x == 4:
            print("hello world!")
            continue
        print("hello world!", end=' ')

for i in range(0, 5):
    x = " " * len("hello world!")
    print(x * i + "hello world!")


def wash_hands(n, m):
    # 总时间
    total_times = 21 * 30 * n
    minutes = total_times // 60
    seconds = total_times % 60
    # 这个改成你要的就行
    return 'm月,%d 分钟，%d 秒' % (minutes, seconds)


for i in range(0, 4):
    x = " " * len("hello world!")
    print(x * i + "hello world!" * (4 - i))


class Poly(object):
    def __init__(self):
        self.polyList = []

    def append_point(self, x, y):
        self.polyList.append((x, y))

    def __str__(self):
        return " ".join(["({},{})".format(x[0], x[1]) for x in self.polyList])

"""
import requests
# 上传文件


